Work-support



c. c. BLAKE.

WORK SUPPORT.

' Patented Jan. 11, 1921.

' v 4 SHEETS-SHEET 7 .3 w r W f0 3 66 0 0 Z 4 8 v Q Q 6/0 m 0 w. mm 3 m A 6 W o/ W M 1, 1 5 1 M M 7 N M M APPLICATION FILED FEB. I8, 1918 0. C. BLAKE.

WORK SUPPORT.

APPLICATION FILED FEB. I8. 1918.

Patented Jan. 11, 1921.

4 SHEETS+SHEET 2.

Fig 2 C. C. BLAKE.

WORK SUPPORT.

APPLICATIDN FILED FEB. 18,1918.

Patented Jan. 11, 1921.

4 SHEETS-SHEET 3- IIIIIIIIIIIIIIIIIIIII C. C. BLAKE.

WORK SUPPORT.

APPLICATION FILED FEB. l8. I918. 1,365,222. Patented Jan 11,1921.

4SHEETSSHEET Fig 44 60 V WIQM WW W UNITED STATES CHARLES C. BLAKE, OF BROOKLINE, MASSACHUSETTS.

PATENT OFFICE WORK-SUPPORT.

Original application filed March 27, 1916, SerialNo. 86,958. Divided and this application filed February T 0 all whom it may concern:

Be it known that I, CHARLES C. BLAKE, a citizen of the United States, residing at Brookline, in the county of Norfolk and State of Massachusetts, have invented certain Improvements in WVork-Supports, of which the. following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relates to devices and mechanisms for use in the manufacture of boots and shoes to support the work for the operation thereon of tools used in the process of manufacture. It is the general object of the invention to devise a construction of this character which willbe convenient for the workman to use, will accurately position the work for the operation of the tools thereon and will securely hold the work in place while it is being operated upon. The invention is particularly concerned with types of work supports designed for use in connection with automatic machinery in which the work is supported on a jack during certain of the making operations.

The various features of the invention will be readily understood from the following description when read in connection with the accompanying drawings, in which,

Figure 1 is a side elevation, partly in vertical cross section, of a work'supporting mechanism embodying the invention;

, Fig. 2 is a front elevation of the mechanism shown in Fig. 1;

Fig. 3 is a longitudinal, vertical cross sectional view through a part of the mechanism shown in Figs. 1 and 2, certain of the parts being shown in elevation;

Fig. 4 is a transverse, vertical, cross sectional view taken substantially on the'line -14, Fig. 3; and T Fig. 5 is a plan View showing part of the work engaging or positioning mechanism. j I

The drawings. show the invention embodied in a heel lasting machine which forms the subject matter'of my pending application Serial No. 86,958, March 27, 1916. Only so much of the machine is shown asis deemed necessary for the purpose of explaining clearly the nature of the present invention. For a complete descrip- Serial No. 217,772.

the forepartof which is held in partially lasted position against the edge face of the sole on the bottom of the last by a binder Qsecured in its binding position by a clamp 3, the jaws of which are arranged to embrace the opposite sides of the shoe. The upper at the shank and around the heel seat projects loosely about the shoe except at substantially the breast line where a cord extending across the shoe, connects the free edges of the upper. The partially lasted shoe is mounted on a jack 4 to which a leader .5 (Figs. 3 and 4) is secured, the leader being located between runners 6 depending from a frame extending laterally from the jack. During the operation of the machine the jack 4 is supported on a flat table 7 carried by a head 8 secured to a base 9. p The jack is secured to the leader so that there is a predetermined relation be tween the edge of the sole on the bottom of the last and the guiding flange on the leader.-

In order to provide for the proper lo-- cation of the jack on the table 7 to insure the proper operation of the heel lasting instrumentalities, the table 7 is provided with a slideway 10 (Fig. 3) for a slide 11 which carries a plate 12 having jaws arranged in a V to embrace 'the heel end of the leader. The plate 12 is normally advanced toward the front end of the table 7 by a spring 13 that is coiled around a rod 14 secured to the slide 11 and is interposed between the back of the slide 11 and the end of a spring chamber 15 formed in the head on the table 7 which loosely passes through a hole 17 formed in the slide 11. The stop determines the operative position of the work with relation to the heel lasting tools.

To clamp the jack in operative position on the table 7 the machine carries a pair of arms 18 arranged to embrace the runners 6 and also a plate 19 having jaws arranged in a V to embrace the toe end of the leader. The arms 18 are pivoted on the head 8 beneath the table 7 (Fig. 4). The lower ends of the arms 18 are connected by links 20 to the base 9. The rock shaft 24 is provided with a second arm 25 ('Fig. 1) which is con nected by a rod 26 to a treadle 27 mounted to move vertically on a pivot 28 and to move laterally about a pivot 29. With this construction, the depression of the treadle vertically about its pivot 28 closes the arms 18 upon the runners 6. To look the arms 18 in clamping position the treadle is moved laterally about the pivot 29 to position the treadle beneath a locking lug 30 secured to the base The plate 19 which embraces the toe end of the leader is carried by a slide 31 (Fig. 3) mounted to slide in the slideway 10. After the leader 5 is engaged with stop 16 and before the arms 18 are engaged with the runners 6, the plate 19 is moved by hand to embrace the toe end of the leader. In order to lock the plate 19 in engagement with the toe end of the leader when the arms 18 are actuated to clamp the runners 6, the slide 31 is provided with a depending arm 32 to which is fixed a horizontal rod 33 mounted to slide freely in a lug 34 depending from the head 8. The rod 33 is normally loosely embraced by a clamping arm 35 pivoted to a horizontal link 36 which in turn is pivoted to a vertical arm 37 carried by a rock shaft 38 journaled in a bracket 39 on the frame 9. The rockshaft 38 is provided with a second arm 40 (Fig. 1) which is connected to the arm 25 by a link 41. With this construction the rod 33 may be freely moved through the opening in the clamping arm 35 to position the plate 19 against the toe end of the leader; but when the treadle 27 is actuated to close the arms 18 upon the runners 6 the arm 35 is cramped on the rod 33 thus locking the plate 19 in its adjusted position against the toe end of the leader. The rod 33 and the runners 6 are released when the treadle is disengaged from the locking lug30, by a coiled spring 42 (Fig. 3) having its opposite ends connected to the base 9 and arm 23, respectively.

For the purpose of supporting the devices that operate on the shoe, the head 8 is provided with a vertical yoke 43, and a cylindrical bearing member 44 is mounted between the arms of the yoke on a transverse pivot pin 45 that is supported by the yoke. A sleeve 46 is rotatably mounted in the hearing 44 and forms the shank or stem of a yoke 47 the arms of which extend forward on opposite sides of the position occupied.

by theshoe and terminate in a bridge 48 that arches upwardly over the'shoe bottom. This bridge supports the lasting device (not shown). c

In order to clamp the shoe firmly in the jack during the heel lasting operation and also for the purpose of gaging the position of the heel seat portion of the shoe with reference to the lasting instrumentalities, a presser foot is arranged to bear on the sole-receiving face of the insole near its heel end. This presser foot is swiveled on the lower end of a post 56 which is vertically adjustable in a carrier 57 that is pivoted on the bridge 48 to swing in a horizontal plane. A leaf spring 59 secured to the bridge and arranged to bear against the square end of the part 57 operates to hold this member normally in its central position.

The presser foot is moved into engagement with the shoe bottom by means of a manually operated mechanism. This mechanism comprises a cylindrical sleeve 60 that is pivoted to the rearward end of the bearing 44 and in which slides another sleeve 61 pivoted at 62 betweenthe arms of a yoke 63. This yoke is supported on a rock shaft 64 which is journaled in the head 8 of the machine. Interposed between the bottoms of the two sleeves 60 and 61 is a spring 65 which encircles a rod 66 that passes loosely through the bottoms of both sleeves and is held in place by a head 67 on one end of the rod and a nut 67 on the other end of the rod. This construction constitutes a toggle having one yielding link.

In order to position the presser foot on the shoe bottom and apply pressure thereto simultaneously with the clamping of the arms 18 and plate 19, the rock shaft 64is provided with an arm 68 (Fig. 1) which is connected to the treadle 27 by a rod 69. With this construction actuation of the treadle 27 tends to straighten the arms of the pressure toggle, thus tipping the bridge 48 downwardly about the pivot 45 and thereby moving the member 55 into engagement with the shoefibottom. Continued pressure on the treadle 27 causes the spring 65 to be compressed thus applying pressure to the presser foot and clamping the shoe securely in the jack. Asit is desirable that the presser foot 55 will always rise clear of the shoe bottom when the treadle 27 is released, the base '9 carries a stop 70 (Fig. 1) which engages the arm 68 during the depressing of the treadle 27 and prevents the complete straightening of the pressure toggle. When the treadle 27 is released a spring 71, (Fig. 3) connected at one end tOitllGjPlVOt 62 and at the other end to the base 9, elevatesthe gage'55 from the shoe bottom.

. It is obvious that the invention is not limited. tothe details of construction shown, but that it may be embodied I'm-other forms varying with the discretion of the designer and the requirements of the particular conditions to which the invention is applied.

WVhat is claimed as new, is: o

1. A shoe machine, having, in combination, a work supporting table a jack having runners mounted to slide on the table into operative position, arms pivoted on the table for clamping the runners to the table, and a treadle for actuating the arms to clamp the runners, substantially as described.

2. A shoe machine, having, in combination, a work supporting table, a jack having runners mounted to slide on the table into operative position, arms pivoted on the table for clamping the runners to the table, and 'a treadle movable vertically to actuate the arms to clamp the runners, and movable laterally to lock the arms in clamping position, substantially as described.

3. A shoe machine, having, in combination, a work supporting table, a jack secured to a leader mounted to slide on the table into operative position, and a fixed stop on the table for determining the operative position of the work, substantially as described.

4:. A shoe machine, having, in combination, a work supporting table, a jack secured to a leader mounted to slide on the table into operative position, a plate having jaws arranged in a V to embrace the heel end of the leader, and a fixed stop on the table for determining the operative position of the leader, substantially as described.

5. A shoe machine, having, in combination, a work supporting table, a jack secured to a leader mounted to slide on the table into operative position, a plate having jaws arranged in a V to embrace the heel end of the leader, a fixed stop on the table for determining the operative position of the leader, and a second plate having jaws arranged in a V to embrace the toe end of the leader, substantially as described.

In testimony whereof I have signed my name to this specification.

CHARLES C. BLAKE. 

